HTTP 500 Internal Server Error: error log

I have an 500 error and was asked to look on my error log to help find a solution. Well, Techie, I’m not:[05-Nov-2013 11:14:10] WordPress database error Unknown column ‘notes’ in ‘field list’ for query
INSERT IGNORE INTO wp_slim_stats (dt, notes, ip, language, country, searchterms, resource, content_info_id, browser_id)
VALUES (‘1383650049′,”,’3351074711′,’xx’,’us’,”,’/250?replytocom=2462′,’2′,”) made by require(‘wp-blog-header.php’), wp, WP->main, do_action_ref_array, call_user_func_array, wp_slimstat::slimtrack, wp_slimstat::insert_row
What does all that mean?